#include <iostream>
#include <vector>
using namespace std;
int main() {
    vector<int> v;
    v.push_back(1);
    v.push_back(2);
    v.push_back(3);
    for (auto i : v) {
        cout << i << endl;
    }
    #ifdef Q
        cout << Q << endl;
    #endif
}